The Challenge of Resistant Frozen Shoulder
Adhesive capsulitis, commonly known as frozen shoulder, is a debilitating condition characterized by severe pain and progressive restriction of both active and passive shoulder range of motion. While the majority of patients respond favorably to conservative management strategies—including targeted physical therapy, joint mobilizations, and intra-articular corticosteroid injections—a specific subset of patients develops a highly resistant form of the disease. For these individuals, conservative measures may fail to yield meaningful improvements even after six months of dedicated rehabilitation. When conservative care plateaus, surgical intervention becomes a necessary consideration to restore function and alleviate suffering. A critical question for both orthopaedic surgeons and physiotherapists is determining which surgical approach yields the most optimal outcomes: manipulation under anesthesia (MUA) or arthroscopic capsular release (ACR).
Analyzing Surgical Interventions: MUA vs. ACR
A recent 2023 study published in the European Review for Medical and Pharmacological Sciences by Ari and Altunkiliç sought to address this very clinical dilemma. The researchers evaluated forty-four patients diagnosed with resistant primary adhesive capsulitis. Inclusion criteria were stringent: patients exhibited glenohumeral and scapulothoracic elevation equal to or less than 100 degrees, alongside a functional reduction in external rotation to less than 50% compared to the unaffected contralateral side. These patients, having failed at least six months of conventional physical therapy and injection therapy, were randomly assigned to undergo either manipulation under anesthesia or arthroscopic capsular release operations based on surgical preference. The study meticulously tracked patient progress across multiple post-operative intervals—specifically at the three-month, six-month, and one-year marks—utilizing objective metrics such as joint range of motion, Visual Analogue Scale (VAS) for pain, and the Constant-Murley shoulder score for overall functional capacity.
Clinical Outcomes and Range of Motion Recovery
The comparative analysis yielded fascinating insights for clinical practice. Throughout the comprehensive one-year follow-up period, both surgical cohorts demonstrated remarkable improvements in their visual pain scores and Constant-Murley scores. However, the data revealed no statistically significant difference in the long-term clinical outcomes between the MUA and ACR groups across all follow-up intervals. Whether the capsular contracture was disrupted via manual manipulation or surgically excised through arthroscopy, the functional restoration and pain mitigation were remarkably comparable. Both interventions proved to be highly efficacious modalities for resetting the joint mechanics and providing a vital window of opportunity for subsequent rehabilitation.
Key Takeaways for Physiotherapy Practice
For physiotherapists, the most crucial finding from this research extends beyond the specific surgical technique utilized. The study concluded that regardless of the surgical method, outcomes were significantly more favorable when the duration of preoperative symptoms was shorter. This highlights a profound clinical pearl: while we must exhaust conservative options, unnecessarily delaying surgical consultation in truly resistant cases may compromise the ultimate functional ceiling of the patient. Post-operative physiotherapy must focus on early mobilization to prevent the rapid reformation of fibrotic tissue. Clinicians should implement immediate passive and active-assisted range of motion exercises, eventually progressing to rotator cuff strengthening and scapulothoracic stabilization. Recognizing when a patient is failing conservative therapy early on ensures they receive timely surgical intervention, maximizing their potential for a complete recovery and return to optimal functional independence.
References
Ari, B., & Altunkiliç, T. (2023). A comparison of two surgical methods in the treatment of shoulder adhesive capsulitis. European review for medical and pharmacological sciences. https://pubmed.ncbi.nlm.nih.gov/36734718/
